nanoCAD Platform Help

2D Constraints

Geometric constraints

CAD drafting 2D Constraints 0Command line: GEOMCONSTRAINT.

Geometric constraints allow you to create dependent geometry.

Procedure

1. Call command  CAD software 2D Constraints 1"Geometric constraints".

Note:

Also, each dependency has its own call command.

2. Select the required geometric dependence from the context menu or from the command line:

      ·    Coincident

      ·    Collinear

      ·    Vertical

      ·    Horizontal

      ·    Perpendicular

      ·    Parallel

      ·    Tangent

      ·    Smooth

      ·    Concentric

      ·    Equal

      ·    Symmetric

      ·    Fix

3. Take the necessary action.

4. Constraint will be installed.

Coincident

CAD drawing 2D Constraints 2Main menu: Constraints - Geometric - CAD drafting 2D Constraints 3Coincident.

CAD software 2D Constraints 4Ribbon: Constraints - Geometric - CAD drawing 2D Constraints 5Coincident.

CAD drafting 2D Constraints 6Toolbar: Constraints - CAD software 2D Constraints 7Coincident .

CAD drawing 2D Constraints 8Command line: GCCOINCIDENT.

The command imposes a dependency overlap.

Procedure

1. Call command  CAD drafting 2D Constraints 9"Coincident".

Note:

After the command is called, other dependency commands will be available in the context menu, which you can switch to if necessary. The list of dependencies is controlled by the switch "Continuous add of constraints in manual mode (autoadd until interrupted)".

2. Specify the first base point of the object or select the object.

To select a point, you must hover over the object. The selected point will be shown in orange. To select the desired point, you must hover over the object from the desired side. To select a point, press LMB. The selected point turns green.

CAD software 2D Constraints 10CAD drawing 2D Constraints 11

To select an object, select the "O-object" command in the context menu and select the required object. The subsequent selected point will be related to it collinearly.

CAD drafting 2D Constraints 12

3. Select the point of the second object in the same way as the first. There will be a combination. The alignment point will be displayed in a yellow square.

If two points were chosen, then they will be combined. The second point moves to the point selected first.

CAD software 2D Constraints 13

If an object and a point were selected, the second object will be placed in such a way that the point is collinear to the first object.

CAD drawing 2D Constraints 14

Note:

If the switch is on "Continuous add of constraints in manual mode (autoadd until interrupted)", after applying the dependency, the system will automatically switch to the insertion of the following dependency. To exit the loop, press "Esc".

Allowable objects and dependency points

     ·     control points of objects;

     ·     line segment;

     ·     circle;

     ·     arc;

     ·     segment of a polyline (rectilinear or arc);

     ·     ellipse.

Collinear

CAD drafting 2D Constraints 15Main menu: Constraints - Geometric - CAD software 2D Constraints 16Collinear.

CAD drawing 2D Constraints 17Ribbon: Constraints - Geometric - CAD drafting 2D Constraints 18Collinear.

CAD software 2D Constraints 19Toolbar: Constraints - CAD drawing 2D Constraints 20Collinear.

CAD drafting 2D Constraints 21Command line: GCCOLLINEAR.

The command imparts collinearity to objects.

Procedure

1. Call command  CAD software 2D Constraints 22"Collinear".

Note:

After the command is called, other dependency commands will be available in the context menu, which you can switch to if necessary. The list of dependencies is controlled by the switch "Continuous add of constraints in manual mode (autoadd until interrupted)".

2. Specify the first object, or select the command "M-multiple" from the context menu, which allows you to assign a dependency to several objects at once.

CAD drawing 2D Constraints 23

3. Specify the second object and subsequent objects (if the "M-multiple" command was selected).

CAD drafting 2D Constraints 24

4. Objects will be collinear, that is, they will be located on the same line. Near the objects there will appear icons of superimposed dependencies.

CAD software 2D Constraints 25

Note:

If the switch is on "Continuous add of constraints in manual mode (autoadd until interrupted)", after applying the dependency, the system will automatically switch to the insertion of the following dependency. To exit the loop, press "Esc".

Allowable objects and dependency points

     ·     line segment;

     ·     rectilinear segment of a polyline.

Vertical

CAD drawing 2D Constraints 26Main menu: Constraints - Geometric - CAD drafting 2D Constraints 27Vertical.

CAD software 2D Constraints 28Ribbon: Constraints - Geometric - CAD drawing 2D Constraints 29Vertical.

CAD drafting 2D Constraints 30Toolbar: Constraints - CAD software 2D Constraints 31Vertical.

CAD drawing 2D Constraints 32Command line: GCVERTICAL.

The command superimposes verticality on objects.

Procedure

1. Call command  CAD drafting 2D Constraints 33"Vertical".

Note:

After the command is called, other dependency commands will be available in the context menu, which you can switch to if necessary. The list of dependencies is controlled by the switch "Continuous add of constraints in manual mode (autoadd until interrupted)".

2. Determine how to apply the dependency: to an object or to a control point. In order to impose a dependency on the control point, call the context menu command "2-2 points".

3. Select an object or points (depending on the selected method). Points can belong to different objects.

Object

2 points

CAD software 2D Constraints 34

CAD drawing 2D Constraints 35

4. Dependence will be imposed. Near the objects there will appear icons of superimposed dependencies.

Object

2 points

CAD drafting 2D Constraints 36

CAD software 2D Constraints 37

 

Note:

If the switch is on "Continuous add of constraints in manual mode (autoadd until interrupted)", after applying the dependency, the system will automatically switch to the insertion of the following dependency. To exit the loop, press "Esc".

Allowable objects and dependency points

     ·     control points of objects;

     ·     line segment;

     ·     rectilinear segment of a polyline.

Horizontal

CAD drawing 2D Constraints 38Main menu: Constraints - Geometric - CAD drafting 2D Constraints 39Horizontal.

CAD software 2D Constraints 40Ribbon: Constraints - Geometric - CAD drawing 2D Constraints 41Horizontal.

CAD drafting 2D Constraints 42Toolbar: Constraints - CAD software 2D Constraints 43Horizontal.

CAD drawing 2D Constraints 44Command line: GCHORIZONTAL.

The command superimposes horizontality on objects.

Procedure

1. Call command  CAD drafting 2D Constraints 45"Horizontal".

Note:

After the command is called, other dependency commands will be available in the context menu, which you can switch to if necessary. The list of dependencies is controlled by the switch "Continuous add of constraints in manual mode (autoadd until interrupted)".

2. Determine how to apply the dependency: to an object or to a control point. In order to impose a dependency on the control point, call the context menu command "2-2 points".

3. Select an object or points (depending on the selected method). Points can belong to different objects.

Object

2 points

CAD software 2D Constraints 46

CAD drawing 2D Constraints 47

4. Dependence will be imposed. Near the objects there will appear icons of superimposed dependencies.

Object

2 points

CAD drafting 2D Constraints 48

CAD software 2D Constraints 49

 

Note:

If the switch is on "Continuous add of constraints in manual mode (autoadd until interrupted)", after applying the dependency, the system will automatically switch to the insertion of the following dependency. To exit the loop, press "Esc".

Allowable objects and dependency points

     ·     control points of objects;

     ·     line segment;

     ·     rectilinear segment of a polyline.

Perpendicular

CAD drawing 2D Constraints 50Main menu: Constraints - Geometric - CAD drafting 2D Constraints 51Perpendicular.

CAD software 2D Constraints 52Ribbon: Constraints - Geometric - CAD drawing 2D Constraints 53Perpendicular.

CAD drafting 2D Constraints 54Toolbar: Constraints - CAD software 2D Constraints 55Perpendicular.

CAD drawing 2D Constraints 56Command line: GCPERPENDICULAR.

The command imposes a perpendicularity on the objects.

Procedure

1. Call command  CAD drafting 2D Constraints 57"Perpendicular".

Note:

After the command is called, other dependency commands will be available in the context menu, which you can switch to if necessary. The list of dependencies is controlled by the switch "Continuous add of constraints in manual mode (autoadd until interrupted)".

2. Select the first object.

CAD software 2D Constraints 58

3. Select the second object. 

CAD drawing 2D Constraints 59

4. Constraint will be imposed. Objects will become perpendicular to each other. Near the objects there will appear icons of superimposed dependencies.

CAD drafting 2D Constraints 60

Note:

If the switch is on "Continuous add of constraints in manual mode (autoadd until interrupted)", after applying the dependency, the system will automatically switch to the insertion of the following dependency. To exit the loop, press "Esc".

Allowable objects and dependency points

     ·     line segment;

     ·     rectilinear segment of a polyline.

Parallel

CAD software 2D Constraints 61Main menu: Constraints - Geometric - CAD drawing 2D Constraints 62Parallel.

CAD drafting 2D Constraints 63Ribbon: Constraints - Geometric - CAD software 2D Constraints 64Parallel.

CAD drawing 2D Constraints 65Toolbar: Constraints - CAD drafting 2D Constraints 66Parallel.

CAD software 2D Constraints 67Command line: GCPARALLEL.

he command imposes a parallel dependency on objects.

Procedure

1. Call command  CAD drawing 2D Constraints 68"Parallel".

Note:

After the command is called, other dependency commands will be available in the context menu, which you can switch to if necessary. The list of dependencies is controlled by the switch "Continuous add of constraints in manual mode (autoadd until interrupted)".

2. Select the first object.

CAD drafting 2D Constraints 69

3. Select the second object.

CAD software 2D Constraints 70

4. Dependence will be imposed. Objects will become parallel to each other. Near the objects there will appear icons of superimposed dependencies.

CAD drawing 2D Constraints 71

Note:

If the switch is on "Continuous add of constraints in manual mode", after applying the dependency, the system will automatically switch to the insertion of the following dependency. To exit the loop, press "Esc".

Allowable objects and dependency points

     ·     line segment;

     ·     rectilinear segment of a polyline.

Tangent

CAD drafting 2D Constraints 72Main menu: Constraints - Geometric - CAD software 2D Constraints 73Tangent.

CAD drawing 2D Constraints 74Ribbon: Constraints - Geometric - CAD drafting 2D Constraints 75Tangent.

CAD software 2D Constraints 76Toolbar: Constraints - CAD drawing 2D Constraints 77Tangent.

CAD drafting 2D Constraints 78Command line: GCTANGENT.

The command superimposes the touch dependence on objects.

Procedure

1. Call command  CAD software 2D Constraints 79"Tangent".

Note:

After the command is called, other dependency commands will be available in the context menu, which you can switch to if necessary. The list of dependencies is controlled by the switch "Continuous add of constraints in manual mode".

2. Select the first object. One of the selectable objects should be: a circle, an arc, an arc segment of a polyline, an ellipse.

CAD drawing 2D Constraints 80

3. Select the second object. One of the selectable objects should be: a circle, an arc, an arc segment of a polyline, an ellipse.

CAD drafting 2D Constraints 81

4. Dependence will be imposed. Objects will touch each other. Near the objects there will appear icons of superimposed dependencies.

CAD software 2D Constraints 82

Note:

If the switch is on "Continuous add of constraints in manual mode", after applying the dependency, the system will automatically switch to the insertion of the following dependency. To exit the loop, press "Esc".

Allowable objects and dependency points

     ·     line segment;

     ·     rectilinear segment of a polyline;

     ·     circle, arc, arc segment of a polyline, ellipse;

     ·     combinations of circles, arcs, arc segments of polylines, ellipses.

Smooth

CAD drawing 2D Constraints 83Main menu: Constraints - Geometric - CAD drafting 2D Constraints 84Smooth.

CAD software 2D Constraints 85Ribbon: Constraints - Geometric - CAD drawing 2D Constraints 86Smooth.

CAD drafting 2D Constraints 87Toolbar: Constraints - CAD software 2D Constraints 88Smooth.

CAD drawing 2D Constraints 89Command line: GCSMOOTH.

The command imposes the smooth constraint on a spline and object.

Procedure

1. Call command  CAD drafting 2D Constraints 90"Smooth".

Note:

After the command is called, other dependency commands will be available in the context menu, which you can switch to if necessary. The list of dependencies is controlled by the switch "Continuous add of constraints in manual mode".

2. Select a point on the first curve.

Important!

The first curve should always be a spline!

CAD software 2D Constraints 91

3. Select a point on the second curve.

CAD drawing 2D Constraints 92

4. Dependence will be imposed. Near the objects there will appear icons of superimposed dependencies.

CAD drafting 2D Constraints 93

Note:

If the switch is on "Continuous add of constraints in manual mode", after applying the dependency, the system will automatically switch to the insertion of the following dependency. To exit the loop, press "Esc".

Allowable objects and dependency points

     ·     spline;

     ·     line segment;

     ·     rectilinear and arc segment of the polyline;

     ·     arc.

Concentric

CAD software 2D Constraints 94Main menu: Constraints - Geometric - CAD drawing 2D Constraints 95Concentric.

CAD drafting 2D Constraints 96Ribbon: Constraints - Geometric - CAD software 2D Constraints 97Concentric.

CAD drawing 2D Constraints 98Toolbar: Constraints - CAD drafting 2D Constraints 99Concentric.

CAD software 2D Constraints 100Command line: GCCONCENTRIC.

Command constraint on the alignment of circles, arcs and other objects.

Procedure

1. Call command CAD drawing 2D Constraints 101"Concentric".

Note:

After the command is called, other dependency commands will be available in the context menu, which you can switch to if necessary. The list of dependencies is controlled by the switch "Continuous add of constraints in manual mode".

2. Select the first object.

CAD drafting 2D Constraints 102

3. Select the second object.

CAD software 2D Constraints 103

4. Dependence will be imposed. Near the objects there will appear icons of superimposed dependencies.

CAD drawing 2D Constraints 104

Note:

If the switch is on "Continuous add of constraints in manual mode", after applying the dependency, the system will automatically switch to the insertion of the following dependency. To exit the loop, press "Esc".

Allowable objects and dependency points

     ·     circle;

     ·     arc;

     ·     arc segment of a polyline;

     ·     ellipse.

Equal

CAD drafting 2D Constraints 105Main menu: Constraints - Geometric - CAD software 2D Constraints 106Equal.

CAD drawing 2D Constraints 107Ribbon: Constraints - Geometric - CAD drafting 2D Constraints 108Equal.

CAD software 2D Constraints 109Toolbar: Constraints - CAD drawing 2D Constraints 110Equal.

CAD drafting 2D Constraints 111Command line: GCEQUAL.

The command sets the relationship between the equality of dimensions (length, diameter, radius, etc.) of two or more objects.

Procedure

1. Call command  CAD software 2D Constraints 112"Equal".

Note:

After the command is called, other dependency commands will be available in the context menu, which you can switch to if necessary. The list of dependencies is controlled by the switch "Continuous add of constraints in manual mode".

2. Specify the first object, or select the command "M-multiple" from the context menu, which allows you to assign a dependency to several objects at once.

CAD drawing 2D Constraints 113

3. Specify the second object and subsequent objects (if the "M-multiple" command has been selected).

CAD drafting 2D Constraints 114

4. Dependence will be imposed. Near the objects there will appear icons of superimposed dependencies.

CAD software 2D Constraints 115

Note:

If the switch is on "Continuous add of constraints in manual mode", after applying the dependency, the system will automatically switch to the insertion of the following dependency. To exit the loop, press "Esc".

Allowable objects and dependency points

     ·      line segment;

     ·     rectilinear and arc segment of the polyline;

     ·     circle;

     ·     arc.

Symmetric

CAD drawing 2D Constraints 116Main menu: Constraints - Geometric - CAD drafting 2D Constraints 117Symmetric.

CAD software 2D Constraints 118Ribbon: Constraints - Geometric - CAD drawing 2D Constraints 119Symmetric.

CAD drafting 2D Constraints 120Toolbar: Constraints - CAD software 2D Constraints 121Symmetric.

CAD drawing 2D Constraints 122Command line: GCSYMMETRIC.

The command sets the symmetry of the two objects relative to the axis of symmetry (line).

Procedure

1. Call command  CAD drafting 2D Constraints 123"Symmetric".

Note:

After the command is called, other dependency commands will be available in the context menu, which you can switch to if necessary. The list of dependencies is controlled by the switch "Continuous add of constraints in manual mode".

2. Determine how to apply the dependency: to an object or to a control point. In order to impose a dependency on the control point, call the context menu command "2-2 points".

3. Select the first object or point (depending on the selected method). Points can belong to different objects.

Object

2 points

CAD software 2D Constraints 124

CAD drawing 2D Constraints 125

4. Select the second object or point (depending on the selected method). Points can belong to different objects.

Object

2 points

CAD drafting 2D Constraints 126

CAD software 2D Constraints 127

5. Select the axis of symmetry.

Important!

The axis of symmetry must be a line.

 

Object

2 points

CAD drawing 2D Constraints 128

CAD drafting 2D Constraints 129

6. Dependence will be imposed. Near the objects there will appear icons of superimposed dependencies.

Object

2 points

CAD software 2D Constraints 130

CAD drawing 2D Constraints 131

 

Note:

If the switch is on "Continuous add of constraints in manual mode", after applying the dependency, the system will automatically switch to the insertion of the following dependency. To exit the loop, press "Esc".

Allowable objects and dependency points

     ·      line segment;

     ·     rectilinear and arc segment of the polyline;

     ·     circle;

     ·     arc;

     ·     ellipse.

Fix

CAD drafting 2D Constraints 132Main menu: Constraints - Geometric - CAD software 2D Constraints 133Fix.

CAD drawing 2D Constraints 134Ribbon: Constraints - Geometric - CAD drafting 2D Constraints 135Fix.

CAD software 2D Constraints 136Toolbar: Constraints - CAD drawing 2D Constraints 137Fix.

CAD drafting 2D Constraints 138Command line: GCFIX.

The command captures a point or object in current coordinates.

Procedure

1. Call command  CAD software 2D Constraints 139"Fix".

Note:

After the command is called, other dependency commands will be available in the context menu, which you can switch to if necessary. The list of dependencies is controlled by the switch "Continuous add of constraints in manual mode".

2. Determine how to add a dependency: to a control point or to an object. To impose a dependency on an object, call the command of the context menu "O-object".

3. Select an object or a point (depending on the selected method).

CAD drawing 2D Constraints 140

4. Dependence will be imposed. Near the objects there will appear icons of superimposed dependencies.

CAD drafting 2D Constraints 141

Note:

If the switch is on "Continuous add of constraints in manual mode", after applying the dependency, the system will automatically switch to the insertion of the following dependency. To exit the loop, press "Esc".

Allowable objects and dependency points

     ·      line segment;

     ·     rectilinear and arc segment of the polyline;

     ·     arc;

     ·     circle;

     ·     ellipse;

     ·     spline.

Parametric dimensions

Aligned

CAD software 2D Constraints 142Main menu: Constraints - Parametric dimensions - CAD drawing 2D Constraints 143Aligned.

CAD drafting 2D Constraints 144Ribbon: Constraints - Parametric dimensions - CAD software 2D Constraints 145Aligned.

CAD drawing 2D Constraints 146Toolbar: Constraints - CAD drafting 2D Constraints 147Aligned.

CAD software 2D Constraints 148Command line: DCALIGNED.

The command sets the dimensional constraint to apply parallel dimensions.

Procedure

1. Call command  CAD drawing 2D Constraints 149"Aligned".

Note:

After the command is called, other dependency commands will be available in the context menu, which you can switch to if necessary. The list of dependencies is controlled by the switch "Continuous add of constraints in manual mode".

2. Determine how to insert an equalized size: 2 points (by default when the command is called), O-object, P-point_line, 2-2lines. The method of insertion is determined by selecting the appropriate command from the context menu.

     ·     2 points - sets the parallel dimension to two points.

CAD drafting 2D Constraints 150

     ·     O-object - sets the parallel size for the selected object.

CAD software 2D Constraints 151

     ·     P-point_line - sets the size that is parallel to the normal from the selected point to the selected segment.

CAD drawing 2D Constraints 152

     ·     2-2lines - sets the size parallel to the normal between two segments.

CAD drafting 2D Constraints 153

3. Specify the required objects, depending on the selected insertion method.

4. Place the parametric dimension on the drawing.

5. Parametric size will be built and added to the "Parameters Manager". A variable is assigned to the parameter dimension.

CAD software 2D Constraints 154

Note:

If the switch is on "Continuous add of constraints in manual mode", after applying the dependency, the system will automatically switch to the insertion of the following dependency. To exit the loop, press "Esc".

Edit

To edit the parametric size, double-click on the size. An editing dialog opens, where you can change the name of the variable and the value. The value can be a formula.

CAD drawing 2D Constraints 155

Also, the parametric size can be edited in  "Parameters Manager".

Allowable objects and dependency points

     ·     control points of objects;

     ·     line segment;

     ·     arc;

     ·     segment and control point;

     ·     two segments;

     ·     segment of a polyline (rectilinear or arc).

Linear

CAD drafting 2D Constraints 156Main menu: Constraints - Parametric dimensions - CAD software 2D Constraints 157Linear.

CAD drawing 2D Constraints 158Ribbon: Constraints - Parametric dimensions - CAD drafting 2D Constraints 159Linear.

CAD software 2D Constraints 160Toolbar: Constraints - CAD drawing 2D Constraints 161Linear.

CAD drafting 2D Constraints 162Command line: DCLINEAR.

The command sets the linear dimension relationship. The linear dimension is constructed orthogonally to the coordinate system.

Procedure

1. Call command  CAD software 2D Constraints 163"Linear".

Note:

After the command is called, other dependency commands will be available in the context menu, which you can switch to if necessary. The list of dependencies is controlled by the switch "Continuous add of constraints in manual mode".

2. Determine how to insert an equalized size: 2 points (by default when the command is called) or O-object. The method of insertion is determined by selecting the appropriate command from the context menu.

     ·     2 points - sets the orthogonal size by two points.

CAD drawing 2D Constraints 164

     ·     O-object - sets the orthogonal size for the selected object.

CAD drafting 2D Constraints 165

3. Specify the required objects, depending on the selected insertion method.

4. Place the parametric dimension on the drawing.

5. Parametric size will be built and added to the "Parameters Manager". A variable is assigned to the parameter dimension.

CAD software 2D Constraints 166

Note:

If the switch is on "Continuous add of constraints in manual mode", after applying the dependency, the system will automatically switch to the insertion of the following dependency. To exit the loop, press "Esc".

Edit

To edit the parametric size, double-click on the size. An editing dialog opens, where you can change the name of the variable and the value. The value can be a formula.

CAD drawing 2D Constraints 167

Also, the parametric size can be edited in "Parameters Manager".

Allowable objects and dependency points

     ·     control points of objects;

     ·     line segment;

     ·     arc;

     ·     segment of a polyline (rectilinear or arc).

Horizontal

CAD drafting 2D Constraints 168Main menu: Constraints - Parametric dimensions - CAD software 2D Constraints 169Horizontal.

CAD drawing 2D Constraints 170Ribbon: Constraints - Parametric dimensions - CAD drafting 2D Constraints 171Horizontal.

CAD software 2D Constraints 172Toolbar: Constraints - CAD drawing 2D Constraints 173Horizontal.

CAD drafting 2D Constraints 174Command line: DCHORIZONTAL.

The command sets a linear horizontal dimension relationship.

Procedure

1. Call command  CAD software 2D Constraints 175"Horizontal".

Note:

After the command is called, other dependency commands will be available in the context menu, which you can switch to if necessary. The list of dependencies is controlled by the switch "Continuous add of constraints in manual mode".

2. Determine how to insert an equalized size: 2 points (by default when the command is called) or O-object. The method of insertion is determined by selecting the appropriate command from the context menu.

     ·     2 points - sets the horizontal size by two points.

CAD drawing 2D Constraints 176

     ·     O-object - sets the horizontal size for the selected object.

CAD drafting 2D Constraints 177

3. Specify the required objects, depending on the selected insertion method.

4. Place the parametric dimension on the drawing.

5. Parametric size will be built and added to the "Parameters Manager". A variable is assigned to the parameter dimension.

CAD software 2D Constraints 178

Note:

If the switch is on "Continuous add of constraints in manual mode", after applying the dependency, the system will automatically switch to the insertion of the following dependency. To exit the loop, press "Esc".

Edit

To edit the parametric size, double-click on the size. An editing dialog opens, where you can change the name of the variable and the value. The value can be a formula.

CAD drawing 2D Constraints 179

Also, the parametric size can be edited in "Parameters Manager".

Allowable objects and dependency points

     ·     control points of objects;

     ·     line segment;

     ·     arc;

     ·     segment of a polyline (rectilinear or arc).

Vertical

CAD drafting 2D Constraints 180Main menu: Constraints - Parametric dimensions - CAD software 2D Constraints 181Vertical.

CAD drawing 2D Constraints 182Ribbon: Constraints - Parametric dimensions - CAD drafting 2D Constraints 183Vertical.

CAD software 2D Constraints 184Toolbar: Constraints - CAD drawing 2D Constraints 185Vertical.

CAD drafting 2D Constraints 186Command line: DCVERTICAL.

he command sets a linear vertical dimension relationship.

Procedure

1. Call command  CAD software 2D Constraints 187"Vertical".

Note:

After the command is called, other dependency commands will be available in the context menu, which you can switch to if necessary. The list of dependencies is controlled by the switch "Continuous add of constraints in manual mode (autoadd until interrupted)".

2. Determine how to insert an equalized size: 2 points (by default when the command is called) or O-object. The method of insertion is determined by selecting the appropriate command from the context menu.

     ·     2 points - sets the vertical dimension to two points.

CAD drawing 2D Constraints 188

     ·     O-object - sets the vertical size for the selected object.

CAD drafting 2D Constraints 189

3. Specify the required objects, depending on the selected insertion method.

4. Place the parametric dimension on the drawing.

5. Parametric size will be built and added to the "Parameters Manager". A variable is assigned to the parameter dimension.

CAD software 2D Constraints 190

Note:

If the switch is on "Continuous add of constraints in manual mode", after applying the dependency, the system will automatically switch to the insertion of the following dependency. To exit the loop, press "Esc".

Edit

To edit the parametric size, double-click on the size. An editing dialog opens, where you can change the name of the variable and the value. The value can be a formula.

CAD drawing 2D Constraints 191

Also, the parametric size can be edited in "Parameters Manager".

Allowable objects and dependency points

     ·     control points of objects;

     ·     line segment;

     ·     arc;

     ·     segment of a polyline (rectilinear or arc).

Radial

CAD drafting 2D Constraints 192Main menu: Constraints - Parametric dimensions - CAD software 2D Constraints 193Radial.

CAD drawing 2D Constraints 194Ribbon: Constraints - Parametric dimensions - CAD drafting 2D Constraints 195Radial.

CAD software 2D Constraints 196Toolbar: Constraints - CAD drawing 2D Constraints 197Radial.

CAD drafting 2D Constraints 198Command line: DCRADIAL.

The command sets the radial dimensional dependence on an arc or circle.

Procedure

1. Call command  CAD software 2D Constraints 199"Radial".

Note:

After the command is called, other dependency commands will be available in the context menu, which you can switch to if necessary. The list of dependencies is controlled by the switch "Continuous add of constraints in manual mode".

2. Specify an arc or circle.

CAD drawing 2D Constraints 200

3. Arrange the parametric dimension on the drawing.

CAD drafting 2D Constraints 201

4. Parametric size will be built and added to the "Parameters Manager". A variable is assigned to the parameter dimension.

CAD software 2D Constraints 202

Note:

If the switch is on "Continuous add of constraints in manual mode", after applying the dependency, the system will automatically switch to the insertion of the following dependency. To exit the loop, press "Esc".

Edit

To edit the parametric size, double-click on the size. An editing dialog opens, where you can change the name of the variable and the value. The value can be a formula.

CAD drawing 2D Constraints 203

Also, the parametric size can be edited in "Parameters Manager".

Allowable objects and dependency points

     ·     circle;

     ·     arc;

     ·     arc segment of a polyline.

Diameter

CAD drafting 2D Constraints 204Main menu: Constraints - Parametric dimensions - CAD software 2D Constraints 205Diameter.

CAD drawing 2D Constraints 206Ribbon: Constraints - Parametric dimensions -CAD drafting 2D Constraints 207Diameter.

CAD software 2D Constraints 208Toolbar: Constraints - CAD drawing 2D Constraints 209Diameter.

CAD drafting 2D Constraints 210Command line: DCDIAMETER.

This command sets the diametrical size dependence on the arc or circle.

Procedure

1. Call command  CAD software 2D Constraints 211"Diameter".

Note:

After the command is called, other dependency commands will be available in the context menu, which you can switch to if necessary. The list of dependencies is controlled by the switch "Continuous add of constraints in manual mode".

2. Specify an arc or circle.

CAD drawing 2D Constraints 212

3. Arrange the parametric dimension on the drawing.

CAD drafting 2D Constraints 213

4. Parametric size will be built and added to the "Parameters Manager". A variable is assigned to the parameter dimension.

CAD software 2D Constraints 214

Note:

If the switch is on "Continuous add of constraints in manual mode", after applying the dependency, the system will automatically switch to the insertion of the following dependency. To exit the loop, press "Esc".

Edit

To edit the parametric size, double-click on the size. An editing dialog opens, where you can change the name of the variable and the value. The value can be a formula.

CAD drawing 2D Constraints 215

Also, the parametric size can be edited in "Parameters Manager".

Allowable objects and dependency points

     ·     circle;

     ·     arc.

Angular

CAD drafting 2D Constraints 216Main menu: Constraints - Parametric dimensions - CAD software 2D Constraints 217Angular.

CAD drawing 2D Constraints 218Ribbon: Constraints - Parametric dimensions - CAD drafting 2D Constraints 219Angular.

CAD software 2D Constraints 220Toolbar: Constraints - CAD drawing 2D Constraints 221Angular.

CAD drafting 2D Constraints 222Command line: DCANGULAR.

The command sets the angular dimensional relationship between the two straight lines.

Procedure

1. Call command  CAD software 2D Constraints 223"Angular".

Note:

After the command is called, other dependency commands will be available in the context menu, which you can switch to if necessary. The list of dependencies is controlled by the switch "Continuous add of constraints in manual mode".

2. Determine how to insert an equalized size: 2 lines (by default when the command is called) or 3-3points. The method of insertion is determined by selecting the appropriate command from the context menu.

     ·     2 lines - sets the angular size in two segments.

CAD drawing 2D Constraints 224

     ·     3-3points - sets the angular dimension. First set the vertex of the angle, then the end points.

CAD drafting 2D Constraints 225

3. Specify the required objects, depending on the selected insertion method.

4. Place the parametric dimension on the drawing.

5. Parametric size will be built and added to the "Parameters Manager". A variable is assigned to the parameter dimension.

CAD software 2D Constraints 226

Note:

If the switch is on "Continuous add of constraints in manual mode", after applying the dependency, the system will automatically switch to the insertion of the following dependency. To exit the loop, press "Esc".

Edit

To edit the parametric size, double-click on the size. An editing dialog opens, where you can change the name of the variable and the value. The value can be a formula.

CAD drawing 2D Constraints 227

Also, the parametric size can be edited in "Parameters Manager".

Allowable objects and dependency points

     ·     line segment;

     ·     ectilinear segments of polylines;

     ·     control points of objects;

     ·     arc.

Dimensional constraint

CAD drafting 2D Constraints 228Main menu: Constraints - Parametric dimensions - CAD software 2D Constraints 229Dimensional constraint.

CAD drawing 2D Constraints 230Ribbon: Constraints - Parametric dimensions - CAD drafting 2D Constraints 231Dimensional constraint.

CAD software 2D Constraints 232Toolbar: Constraints - CAD drawing 2D Constraints 233Dimensional constraint.

CAD drafting 2D Constraints 234Command line: DIMCONSTRAINT.

The command converts simple dimensions to parametric.

Procedure

1. Set the dimensions.

CAD software 2D Constraints 235

2. Call command CAD drawing 2D Constraints 236"Dimensional constraint" and specify the dimensions for conversion.

CAD drafting 2D Constraints 237

3. The specified dimensions are converted to parametric.

CAD software 2D Constraints 238

Parameters Manager

CAD drawing 2D Constraints 239Main menu: Constraints - CAD drafting 2D Constraints 240Parameters Manager.

CAD software 2D Constraints 241Ribbon: Constraints - Management - CAD drawing 2D Constraints 242Parameters Manager.

CAD drafting 2D Constraints 243Toolbar: Constraints - CAD software 2D Constraints 244Parameters Manager.

CAD drawing 2D Constraints 245Command line: PARAMETERS.

Procedure

1. Call command  CAD drafting 2D Constraints 246"Parameters Manager". Open dialog "Parameters Manager".

CAD software 2D Constraints 247

2. Edit the list of parameters.

The parameters in the list are divided into three sections:

     ·     User Parameters - the parameters entered by the user are not tied to objects.

     ·     Dimensional Constraints - dependencies imposed in the sketch using parametric dimensions.

     ·     Model parameters - dependencies obtained as a result of 3D-design operations.

The list consists of four columns:

     ·     Name - name of the parameter. You can edit.

     ·     Expression - expression as a value or a formula that uses other parameters, operators, and functions. You can edit.

     ·     Value - the final value when evaluating the expression. Not editable.

     ·     Related object - the name of the object associated with the parameter. Not editable.

To manage the list, the following buttons are available:

     ·     CAD drawing 2D Constraints 248Create a new user parameter - creates a new parameter that is not bound to objects.

     ·     CAD drafting 2D Constraints 249Delete the selected parameter - removes any selected parameter.

Important!

Removing dimensional dependencies or model parameters, together with the parameter, the operation or dimensional dependence is deleted.

     ·     CAD software 2D Constraints 250Variables related to parametric 3D - switch, controls the display of 2D and 3D parameters. When the toggle is on, the user parameters for 3D and "Model parameters" are displayed, when it is off, the user parameters for 2D and "Dimensional Constraints" are displayed.

To find the required parameter, you can use the filter in the upper right corner of the form.

3. Press button  "Close".

Using Dimensional Constraints

Let us create constraints for a circle and a rectangle based on 2 conditions:

Condition 1. Center of the circle is at the same point as a center of a rectangle.

Condition 2. The area of a circle is to equal to the area of a rectangle.

CAD drawing 2D Constraints 251

Let assign names to all dimensional constraints and set their relations.

At first we define an expression to place a center of a circle at the center of a rectangle.

CAD drafting 2D Constraints 252

CAD software 2D Constraints 253

Now we define equality of areas of the circle and rectangle.

To do this, we create an Area as user parameter.

CAD drawing 2D Constraints 254

Set an expression for a radius of the circle.

CAD drafting 2D Constraints 255

CAD software 2D Constraints 256

You could set equality of areas of the circle and the rectangle without definition of a user parameter by entering an expression for the Radius: sqrt((Length*Width)/PI).

Operators and functions

Operators

The following operators can be used in expressions:

Operator

Description

+

 Addition

-

 Substruction or Negative

%

 Modulo or Remainder operator The expression "7 % 3" would evaluate to 1, because 7 divided by 3 leaves a quotient of 2 and a remainder of 1.

*

 Multiplication

/

Division

^

Exponentiation

()

 Round brackets

.

 Decimal divider

Expressions are evaluated according to the standard mathematical rules of precedence:

   1.     Expressions within brackets; innermost sets first.

   2.     Standard operations order:

                 ·     unary negation (negative value)

                 ·     exponent

                 ·     multiplication and division

                 ·     addition and subtraction

   3.     Operators of equal precedence from left to right.

Functions

The following functions can be used in expressions:

Function

Syntax

Cosine

cos (expression)

Sine

sin (expression)

Tangent

tan (expression)

Arccosine

acos (expression)

Arcsine

asin (expression)

Arctangent

atan (expression)

Hyperbolic cosine

cosh (expression)

Hyperbolic sine

sinh (expression)

Hyperbolic tangent

tanh (expression)

Hyperbolic arccosine

acosh (expression)

Hyperbolic arcsine

asinh (expression)

Hyperbolic arctangent

atanh (expression)

Square root

sqrt (expression)

Signum-function (-1, 0, 1)

sign (expression)

Round to nearest integer

round (expression)

Truncate decimal

trunc (expression)

Round down

floor (expression)

Round up

ceil (expression)

Absolute value

abs (expression)

Largest element in array

max (expression 1; expression 2)

Smallest element in array

min (expression 1; expression 2)

Degrees to radians

d2r (expression)

Radians to degrees

r2d (expression)

Logarithm, base e

ln (expression)

Logarithm, base 10

log (expression)

Exponent, base e

exp (expression)

Exponent, base 10

exp10 (expression)

Power function

pow (expression 1; expression 2)

Random decimal, 0-1

Random

Auto constrain

CAD drawing 2D Constraints 257Main menu: Constraints - CAD drafting 2D Constraints 258Auto constrain.

CAD software 2D Constraints 259Ribbon: Constraints - Geometric - CAD drawing 2D Constraints 260Auto constrain.

CAD drafting 2D Constraints 261Toolbar: Constraints - CAD software 2D Constraints 262Auto constrain.

CAD drawing 2D Constraints 263Command line: AUTOCONSTRAIN.

The command automatically sets constraints depending on the geometry.

Procedure

1. Call command  CAD drafting 2D Constraints 264"Auto constrain".

2. Select objects to overlay dependencies. You can choose a secant frame. If the objects were selected before the command is called CAD software 2D Constraints 265"Auto constrain", the process of selecting objects is skipped.

CAD drawing 2D Constraints 266

3.Press "Enter" to complete the selection of objects. The system automatically imposes the necessary dependencies.

CAD drafting 2D Constraints 267

Constraint settings

CAD software 2D Constraints 268Main menu: Constraints - CAD drawing 2D Constraints 269Constraint settings.

CAD drafting 2D Constraints 270Toolbar: Constraints - CAD software 2D Constraints 271Constraint settings.

CAD drawing 2D Constraints 272Command line: CONSTRAINTSETTINGS.

Procedure

1. Call command CAD drafting 2D Constraints 273"Constraint settings". Open dialog "Constraint Settings".

CAD software 2D Constraints 274

2. Configure the dependencies:

     ·     List "AutoConstrain Settings" - allows you to set the type of dependencies and the order of their overlapping. In the "Apply" column, clicking the LMB adjusts the activity of the dependency types. Active dependency types can be used in auto-imposed dependencies.

The list is supplemented with control buttons:

                 ·     Move up - moves the selected dependency type higher in the list (increases the priority).

                 ·     Move down - moves the selected dependency type lower in the list (lowers the priority).

                 ·     Select all - makes all dependency types active.

                 ·     Clear all - makes all dependency types inactive.

                 ·     Reset - demand settings to the original settings.

     ·     Switch "Tangent objects must share intersection point" - controls the condition that autotuning "Tangent" will occur only for objects with a common point.

     ·     Switch "Perpendicular objects must share intersection point" - controls the condition that the "Perpendicular" autoconfiguration will occur only for objects with a common point.

     ·     Field group "Autoconstrain tolerances":

                 ·     Distances - the maximum allowable distance between control points for automatic alignment.

                 ·     Angles -the maximum angle between objects for automatic superposition of perpendicularity and parallelism.

     ·     Switch "Countinuous add of constraints in manual mode (autoadd until interrupted)" - controls the cyclic mode of overlay dependencies, as well as a list of dependencies in the context menu when the dependency is called.

     ·     List Dimensional constrainr format - controls the display of the name of the dimension dependency in the drawing. When you select a format to the right of the list, its display example is displayed.

Possible options:

                 ·     Name - displays only the name of the dimension dependency.

                 ·     Value - displays the magnitude of the dimensional dependence.

                 ·     Name and expression - displays the name of the dimension relation, as well as the parametric expression of the dependency. If no parametric expression is imposed on the dependence, then Expression=Value.

3. Press button "OK" to confirm the change of settings. The "Constraint Settings" dialog box closes.

Show/hide constraints

CAD drawing 2D Constraints 275Main menu: Constraints - CAD drafting 2D Constraints 276Show/hide constraints.

CAD software 2D Constraints 277Ribbon: Constraints - Management - CAD drawing 2D Constraints 278Show/hide constraints.

CAD drafting 2D Constraints 279Toolbar: Constraints - CAD software 2D Constraints 280Show/hide constraints.

CAD drawing 2D Constraints 281Command line: SHOWHIDECTRS.

Procedure

1. Call command CAD drafting 2D Constraints 282"Show/hide constraints". If the dependencies were hidden - they will be shown, if displayed - hidden.

Delete constraints

CAD software 2D Constraints 283Main menu: Constraints - CAD drawing 2D Constraints 284Delete constraints.

CAD drafting 2D Constraints 285Ribbon: Constraints - Management - CAD software 2D Constraints 286Delete constraints.

CAD drawing 2D Constraints 287Toolbar: Constraints - CAD drafting 2D Constraints 288Delete constraints.

CAD software 2D Constraints 289Command line: DELCONSTRAINT.

The command removes dependencies from the selected object.

Procedure

1. Call command CAD drawing 2D Constraints 290"Delete constraints".

2. Specify the dependencies or objects for which you want to remove dependencies.

3. Press the "Enter" key. The selected dependencies, all dependencies of the selected objects, and the dependencies associated with these objects are deleted.

Note:

When you add a "Coincident" dependency, this dependency is displayed by a dot, not by an icon. At the same time, there can be several alignment relationships at one point. To remove such dependencies, in the delete dependencies mode, move the mouse cursor over the dependency point. In this case, the entire set of coincidents will unfold at this point. You can delete any of them.

CAD drafting 2D Constraints 291

 

 

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